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Finding the Fourth Proportional to 221,371.09, 332,080.36 and 61,447.70

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Solution

The fourth proportional to 221,371.09, 332,080.36 and 61,447.70 is: 92,178.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,371.09 : 332,080.36 = 61,447.70 : x
  2. Step 2: Convert to fraction form
    221,371.09/332,080.36 = 61,447.70/x
  3. Step 3: Cross multiply
    221,371.09x = 332,080.36 × 61,447.70
  4. Step 4: Simplify right side
    221,371.09x = 20,405,574,806.00
  5. Step 5: Solve for x
    x = 20,405,574,806.00/221,371.09
  6. Step 6: Final answer
    x = 92,178.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.